start - 0:01.1: HASU

0:01.2 - 0:02.1: Sheng Meng Chen

0:02.2 - 0:08.4: Yukiko Nakatani

0:08.5 - 0:10.1: Zihang Mo

0:10.2 - 0:14.2: HASU

0:14.3 - 0:15: Kurara

0:15.1 - end: Tsuguhide Furukawa

I wonder if all of these Hololive animations are officially tied with the company.

I mean it was posted to Marine's channel. I don't see why it wouldn't be

idonno said:
I wonder if all of these Hololive animations are officially tied with the company.

All the animated MVs even if taken "theorically" by one of the members own pockets to pay for it, have an official attachment with Cover themselves, since the production on the organization side is mostly handled by them alongside the rights for the said songs and the animation itself

For a short answer, yeah, all and any published animated MV posted on a Holomem channel is tied to Hololive/Cover